Airbnb could very well drive up "spare room" prices. For instance, think about a room in a house, or may be a small in-law, that used to be rented out to a stu

Airbnb could very well drive up "spare room" prices. For instance, think about a room in a house, or may be a small in-law, that used to be rented out to a student or other longer term tenant. With airbnb, it may be possible to make up that income on fewer days, or to greatly exceed it as a full time rental. That would result in a unit being taken off the market as a permanent rental, which could certainly reduce supply and drive up prices.